It's not true I had nothing on, I had the radio on.
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Radios are a relatively news technology, especially in the form that many people are familiar with them – FM, car stereo, cheap walkie-talkie tools. Though most associate this technology with listening music, in fact a large number of people, companies and agencies use this technology in various forms for communication purposes, something that has seen a drop since the arrival of cellular technology. Nonetheless, radio frequencies are still a dominant form of communication especially in wide open areas where cellular transmitters are not an option. Additionally, this technology is cheap, widely available and easy to set up so it’s just simply more practical for communication for most people and organizations.
Regardless of the form, the technology runs off of a transmitter and receiver. Most standard car units have just a receiver, but practical models for communication have both of these pieces built into them. The transmitter and antenna covert the signal into an electromagnetic wave, which can travel through open space just like normal electromagnetic waves naturally do. As it travels through space, it can then be picked up by any receiver tuned to its wave frequency and turned back into its original signal.
Back in the day, this meant a huge amount of electricity, tall antennas and a whole mess of static that made some signals impossible to understand. Fortunately, the technology has improved and governments have legally limited different frequencies for different purposes. Though radio is powerful, it does have its limitations, so these devices (unlike cell phones) can only communicate within certain distances. This allows for a lot of radio chatter to exist since it is mostly localized with far-reaching signals being limited to radio stations and government control.
Whether you have a company to run or just want to vacation with the kids with a little easier, this technology comes in many different forms to allow you to cheaply and effectively communicate. For commercial applications, there are large models that can reach over great distances on semi-secure channels. For families and other small uses, there are a variety of inexpensive models that can be used over very short distances. These are great models for families and groups at beaches, theme parks, and any other large place. These are not very secure so are not effective for commercial use, however for most people they are a great convenience.
This technology has grown a lot in a hundred years and is seen practically everywhere. Many people have developed this technology into a hobby to great enjoyment.
